Across
- 3. energy- rich substances formed from dead organisms
- 5. is a substance the provides energy
- 10. rods made of u-235
- 11. electricity made by flowing water
- 15. chemicals that contain hydrogen and carbon atoms
- 16. energy from the sun
- 17. made of metal cadmium
- 18. made from gasoline and alcohol mixing
Down
- 1. the central core of an atom
- 2. a change from one form of energy to another
- 4. the percentage of energy that is used
- 6. compounds made from oil
- 7. intense heat from Earth's interior
- 8. the part of the nuclear reactor where nuclear fission occurs
- 9. combining of two nuclei to produce a larger nucleus
- 12. made from living things
- 13. fuel rods generate too much heat that they start to melt
- 14. another name for oil
- 17. burning of fossil fuels